Filling nozzle



Aug. 20, 1935. ANDREAS 2,012,116

FILLING NOZZLE Filed Jan. 15, 1931 INVENTOR ArnoAndreaw M ATTORNE Patented Aug. 20, 1935 Arno Andreas Mun's'ter, Germany Application-Januaryil3, 1931,:Serial No. 508,451)

I In Germany .Iuly.' ,2l8,-19.30v

My present invention relates to filling nozzles or sprouts, such for example as are usedin filling valve .bags with powdered or granulated material as cement, sugar, salt, etc.- Although herein particularlyillustrated and described in connection with valvebags, the invention is not necessarily confined to such particular practieeor use, but it may obviously be used in connection with any type of bag or container for which 'in practice it is found adaptable or advantageous, and it may also in practice find use as a filling instrumentality for materials other than those particularly characterized as powdered or granulated.

For'quick filling of a valve bag, made of paper or other material impervious to the passage of air, it is known to make the valve opening somewhat larger than the filling name; so thatas the bag "is filled, the air therein can escape through the space or channel interveningbe tween the filling nozzle and adjacent valve wall.

During the filling operation, with the" nozzle entering 'the'valve opening, the bag usually hangs pendant from the nozzle so that the, air escape opening normally appears between the' lower portion of the nozzle and the lower"portio'n of 1 the valve of the bag and where it iseasily closed up by the raising of the valve wall itself against the nozzle.

It is the object and purpose of my present inand these channels aiford passages through which the air escapes without restraint for the quick filling of the bag.

Another object of the invention is to so form the rib or ribs along the underneath portion of the nozzle that the dust carried by the escaping air will not lodge and accumulate thereon and will not pack in the channels,even when the material dealt with possesses adhering qualities as is sometimes the case with cement, powder, sugar, etc. Owing to the'location and formation of the rib or ribs, if any material should collect thereon, it can readily, be thrown off by shaking or jogging the nozzle either during the fillingloperation or during the time a filled bag is being replaced by an empty one.

With the foregoing objects and others in View, as will appear as the descriptionproceeds,-the invention consists inthe improved nozzle and in the form, construction, and relative arrangement of its. parts, as will be hereinafter more fully described andclaimed. I The invention will best be understood by refer- .ring to the accompanying drawing, forming a showny-" I Fig. 4'is a cross section taken on the line 4-4 i i Figs. 5 and6 are views similar to Figsl and2, respectively, showing a modified form of construction; and l Figs. '7 and 8 are diagrammatical views on a larger scale, illustrating the air channels produced by the one-rib and two-rib constructions,

respectively. l

Referring in detail to the accompanying drawing, it will be seen that the filling nozzle is madev in the form of a tube or conduit in having an interior. passageway H through which powdered or granulated material passes for discharge through the open front delivery end 12 to'fall into the valve bag It.

At its rear end, the nozzle may be equipped with a flange structure I l or equivalent means whereby to be supported in horizontal or approximately horizontal position from a fillingmachine, feed pipe or the like for flowing the rna-,

terial through the nozzle into the'bag.

The bag is of the automatic closing type and is applied to the nozzle tohang thereon at one corner in a manner well known in the art, with the nozzle projecting through the opening formed by the encompassing wall it? which includes the valve of thebag. Y

a i In the form of, construction illustrated in Figs.

1 to 4, the nozzle is represented as provided on its exterior surface, centrally along its under" neath side, with a lengthwise extending-r3016.

By means of this rib, the lower portion l5 of the valve wall is held in spaced relation to the exterior underneath surface of the nozzle, and two air channels ll, i! one being on each side of the rib, are provided for the escape of air from the interior of the bag to the outside atmosphere. As will be evident, the. rib serves as a spacer between the lower portion l5 of the valve wall by passing over the valve along the underneath surface of the nozzle and it is of a length to insure that the channels [7, 17 will be through channels from the inside to the outside of the bag for the escape of air from the bag during the filling operation. This rib, at the same it'ime' serves to restrain the upward closing of the valve of the automatic closing type of valve bag. "The rib also serves as an abutment for the valve.

To avoid cutting or tearing the valve walllduring the application or removal of the bag and during the filling operation, the free edge of the rib is rounded as at 18 andythe front end :18 thereof is curved upwardly under thenozzleand merges with the-surface thereof.

In the exemplification shown in Figs. 5. and 6, the nozzle is represented as having two ribs 20, 25 located atopposite sideszofthe center line of thelnozzle and projecting in opposite directions from each other. With this arrangement-of the spacer ribs a channel 2| of relatively large cross section is provided between the lower portion of the valve Wall andexterior surface of the nozzle. Also, smaller channels 21' are formed along the outer sides of the ribs. These ribs, like "the rib H5 in the first describedarrangement, have their free edges rounded and their front ends curved upwardlyalong the nozzle, surface and merged with the surface thereof, to avoid-any injury to the valvewall. V

In both forms of construction, the ribs may be and preferably are, narrowedin cross sectional area from the nozzlesurface- :totheir free edges. Since the projection of the ribs is in a direction downwardly from the underneath surface :of the nozzle and since in cross sectional formthey' nar-' row and round downwardly, the dust in the escaping air can find no pl-aceto lodge and accumulate, and if any material should clinge to the ribs or to the underneath suriaceofthegnozwith the surface thereof zle, it can be readily thrown oh by shaking or jogging the nozzle or by causing the nozzle to vibrate under a blow or-blows delivered thereon or upon the bag. Where the nozzle is attached to a filling machine, the vibrations resulting from the operation of the'machine are usually sufficient to keep the ribs and underneath surface of the nozzle clear of adhering material. Be-. neath the nozzle, and between it and the valve of the bag,"a conical space may be formed which, in crosssectional area, gets'larger towards the outside of the bag.

'Another advantage of the present invention resides the fact that the ribs, being arranged .on the underneath side of the nozzle, do not "interfere any way with any clamping device,

necessary for application upon the top side of the nozzlefor securing the bag in place upon the nozzle for the filling operation.

, The invention disclosed evidences in its simplest .form..a spacer means. between the filling tubeofthe nozzle and thebag wall to assure a permanent .nonrcloggable air .escape channel.

While I haveshown and described theqpreferred arrangement of the ribs-and thegpreierred forms thereof. as reduced :to practice, it is, of course, to be understood that the-arrangements and forms disolosed are susceptible of changeand modification and I, therefore, reserve the privilege of adopting all suchlegitimate changes-or modifications asimay be fairlyembodied within the spiritand scope of the invention as claimed.

I claim:-- I h Ina machine forfilling a bag having aninfolded corner providing. a valve; a horizontal filling nozzle inserted through said infolded corner, andalongitudinal rib extending along the bottom surface of'said nozzle, said rib engaging the vmaterial of said infolded corner and spacing saidmate-rial away from-the bottom surface of s'aidnozzlej-thesaid rib being narrowed androunded in ,cross section downwardly from the nozzle surfaceto its free edge, the free edge of said rib being rounded and thefront .end' being curved upwardly under the nozzle and merging ARNO 

